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3 Sheets-Sheet 1.

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A. MALM; PAPER CUTTING MACHINE.

No. 443,398. 'Patented Deo. 23,1890.

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3 Sheets-Sheet 2.

(No Model.)

AMALM l PAPER CUTTING MACHINE.

No. 443,898. Patented Dec. 23, 1890.

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A. MALM. PAPER CUTTING MACHINE.

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ALEXANDER MALM, OF NEWV YORK, N. Y., ASSIGNOR TO TIIEODORE IV. SHERIDAN, OF BROOKLYN, NEWT YORK, AND CHARLES B. SHERIDAN,

OF ORANGE, NEWT JERSEY.

PAPER-CUTTING MACH l N E.

SPECIFICATION forming part of Letters Patent No. 443,398, dated December 23, 1890.

Application filed August 28, 1890. Serial No. 363,287.` (No model.)

To all whom it may concern:

Be it known that I, ALEXANDER MALM, a citizen of the United States, residing at new York, in the county and State of New York, have invented. new and useful Improvements in Paper-Cutting Machines, of which the following is a specification.

This invention relates to improvements in paper-cutters; and the invention consists in the details of construction set forth in the following specication and claims and illustrated in the accompanying drawings, in which- Figure l is a face elevation of a paper-cutter containing lthe invention. Fig. 2 is a plan view of Fig. l. Fig. 3 is a section along Fig. l. Fig. 4 is a section along 1/ y, Fig. 2. Fig. 5 is a section along .e e', Fig. 3. Fig. (l is a section along o c, Fig. 1.

In the drawings, the letter A indicates a support or frame, having a table B for the paper O, as also a clamping-bar D and cutter or blade E to clamp and cut the paper.

F is the cutter-head.

The construction and operation of these parts are well known and need no detailed description.

The driving-shaft G has the usual fast and loose pulleys H I-I and a fly-wheel I. Said shaft G gives motion to the driving-gearconiposed of the two pinion parts or wheels K L. The actuatinggear M moves the cutter E to its work, and the returning-gear N returns the cutter to the starting-point. The gear M is engaged by the pinion K and the gear N by the pinion L. The gears M N are each shown in the form of mutilated or segment-al gears mounted on the shaft O, and they have crankpins P, connected by links Q to the cutter. The pinion parts K L are of different sizes, as

are also the gears M N, so that the cutter is moved to the work slowly and with considerable force, and when the work is finished the cutter is returned rapidly to its starting-point. The pinion L has twice the number of teeth of the pinion K. The teeth of the pinions K L are so situated (see Fig. 6) that the radii or radial planes drawn from the center of the pinion K through two adjacent teeth in said pinion will pass through two teeth of pinion tween said two teeth of pinion L.

In Fig. 3 the parts are indicated in the position occupied when the knife is about to move toward the work. The actuating-gear M, moving in the indicated direction, is en- 5 5 gaged by the pinion part K, and as the diameter of gear M is large and that of pinion part K small the shaft G has considerable leverage, so that it can move the knife to the work with y considerable force. When the gear M has 6o passed the pinion part K, the returning-gear N is engaged by the pinion part L, and by reason of the reduced diameter of gear N and of the increased diameter of pinion part L the knife is returned rapidly to its startingpoint without the shaft G having to alter its speed. The gears M N carrya stud or inclined projection R, which, when the cutter has re` turned to the starting-point, strikes the inger S, Fig. 1, connected to the lever TU fulcrumed 7o at V. Said lever actuates t-he clutch IV, which connects the shaft G and driving-pinion KL. When the stud R strikes the inger S, the clutch-actuating lever is moved, so as to throw the clutch out of action and stop the machine when the cutter has reached the starting-point. The lever T U carries a set-screw X, which can be so adjusted that when the lever T U is moved to release the clutch the screw X presses upon a brake or strap Y, so as to 8o tighten said brake about the driving-pinion K L and promptly stop the machine. Fig. 4 shows the pinion K L provided with a suitable drum engaged bythe brake-band Y. A handlever a Z, fulcrurned at l), is connected to the clutch-lever T U, and said hand-lever can be used to move the clutch-actuating lever, so as to bring the clutch into its engaging position when the machine is to be started. Then the clutch is in its released position, the arm a of 9o lever a Z is engaged by spring c, so that the clutch is locked against accidental engagement.

That I claim as new, and desire to secure by Letters Patent, is-

l. In a paper-cutting machine, the combination, with the cutter or blade, of a drivingshaft, an actuating-gear, and a returning-gear L, leaving an intermediate tooth locatedrbe- 5o connected with the critter or blade, a pair of pnions arranged 011 the drivin g-shaft and oonneoted to rotate in unison, and a clutch serving to connect both pinions with the shaft for sinmltaneonsly rotating such pinions, substantially as described.

2. In a papercutting machine, the co1nbination, with the cutter or blade, of a segmental or mutilated actuating-gear and a segmental or mutilated returning-gear, and driving-pinions K L, made to engage the actuating and returning gears, substantially as described.

3. In a paper-cutting machine, the combination, with the cutter or blade, of an actuating and a returning gear for said blade, driving-pinions for the actuating and returning gears, a driving-shaft, a clutch made to connect the driving-shaftand driving-pinions, an actuating-lever vfor the clutch, and a stud or projection carried by the actuating and returning gears for moving the lever and clutch to the releasing position, substantially as described.

4. In a paper-cutting machine, the combination, with the cutter or blade, oi' an actuating anda returning gear for said blade,driving-pinions for the actuating and returning gears, a driving-shaft, a clutch made to con neet the driving-shaft and driving-pinions, an actuatinglever for the clutch, a brake connected to the actuating-lever, and a stud or projection carried by the actuating and rcturning gears for moving the lever and clutch to the releasing position and for tightening the brake, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing Witnesses.

AL EXANDER MA'LM. Vitnesses;

WM. C. 'IIAUFR E. F. KASTENHUBER. 

